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Code as above; You can see, There are obvious shortcomings, For example, when I click on an element, I need to create a div. I click on the second element to create a div again, We frequently click on such and such elements, and they will frequently create div elements. Although we can remove pop-up codes when we click Close, it is not good for us to frequently create and delete them, especially for performance, and frequent operations on DOM will cause redrawing, etc., thus affecting performance. Therefore, this is a very bad habit. We can now use the monomer mode to realize the pop-up effect. We can instantiate it only once. The following code:The life of the brand should gradually develop and grow with the passage of time. The extension of the brand is also developing and changing. This change is not only reflected in the extension of types, but also in the changes in the life cycle of single products themselves.Provincial Transport Wins 4 Gold Medals Revival in Sight,爹的话你都敢不听了？你伤才好，哪里能上阵杀敌？葫芦点头道：这一回，儿子一定不会听爹的。Melinda（詹妮弗·洛芙·休伊特 Jennifer Love Hewitt 饰）具有一种和鬼魂沟通的神秘能力，祖母告诉她这些鬼魂之所以不肯离开，是因为他们和活着的人之间还有未完成的事，并把他们叫做“土地幽灵”。因为Melinda具有与鬼魂沟通的这种特殊能力，所以常常有鬼魂来找她帮忙，并进行一些超自然的调查。正因为此，Melinda经常遭到人们的非议和质疑，但当她发现自己不仅能帮助死者，也同样对在世的人给予援手时，她知道自己的特异功能不是负担而是一笔财富……Exception promotion method: unknown